“A person who is prejudiced in his views and intolerant of the opinions of others” is known as

Traditional: Someone or something that follows long-established customs, beliefs, or practices passed down from generation to generation. It simply means adherence to old ways. Example: a traditional wedding ceremony.

Orthodox: Conforming strictly to established doctrines, beliefs, or practices — especially in religion. An orthodox person follows the accepted, standard, or conventional way without deviation. Example: an orthodox interpretation of the scripture.

Bigot: A person who is intolerant of those who hold different opinions, belong to a different group, race, religion, or culture. A bigot is stubbornly and unreasonably attached to their own beliefs while being hostile to others. Example: a bigot who refuses to accept people of other faiths.

Ideologue: A person who follows an ideology — a set of beliefs or ideas — very rigidly and dogmatically, often without being open to reason or evidence.

Hence, bigot is the most appropriate choice here. Because a bigot is not just prejudiced but also intolerant of others’ views.